Granted Patent
Utility
US 5,994,585 · App. 09/190,486
Amination process
Inventor:
Johan Gunther-Hanssen
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Nov 12, 1998
Inventor
Johan Gunther-Hanssen
Assignee (at issue)
AKZO NOBEL N.V.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.